Syringe-bulb.



No. 7l6,526. Patented Dec. 23, I902.

R. H. EDDY.

SYRINGE BULB.

(Application filed June 3. 1902.)

(No Model.)

r 64,- c, Z c 6 I a IE.

WITNESSES. INVENTOR- Units rates RICHARD II. EDDY, OF PROVIDENCE, RHODE ISLAND.

SYRlNGE-BULB.

SPECIFICATION forming part of Letters Patent No. 716,526, dated December 23, 1902.

Application filed June 3,1902. SarialNo.110,051. [No model);

T0 at, who/12, Z 1 'nuty concern.-

Be it known that I, RICHARD H. EDDY, a citizen of the United States of America, and a resident of the city and county of Providence, in the State of Rhode Island, have invented certain new and useful Improvements in Syringes, of which the following is a specification.

- This invention relates to syringes of the class in which the bulb member and its tube are employed for injecting and Withdrawing the medicament or cleansing fluid. A syringe of this type is shown and described in United States Letters Patent No. 696,728, issued to me April 1, 1902.

My present invention resides in the novel construction of the bulb member; and it consists, essentially, in the combination of a rubber bulb having its base or rear portion provided with a recessed end in which is formed a central opening, the inner edge of which latter is enlarged or well rounded, and a removable plug of glass, porcelain, or other suitable material seated in said opening and also conforming to the shape of the bulbs base, all as hereinafter set forth and claimed.

In syringe-bulbs as usually constructed no provision is made for thoroughly cleansing them interiorly after nse-that is to say, the Water or fluid is simply introduced into the mouth or neck of the bulb and well shaken, followed by rinsing, the waste fluid in such case being subsequently poured from the bulb via its neck. In myimproved syringebulb a free and unobstructed passage-way is formed therethrough, thereby adapting it to be Washed and cleansed with greater facility andtho'roughness. Another resultant advantage is that the form and arrangement of the base-opening is such that an absolutely water-tight joint is maintained around the plug. In fact, the pressure exerted in forcing the liquid or treating fluid outwardly from the bulb into the syringe-tube, as when in use, operates also to insure a more intimate contact of the bulbs yielding end against the adjacent surface of the inelastic plug.

In the accompanying drawings, Figure l is a side elevation, in partial section, of my improved syringe-bulb, having the end plug seated therein, and Fig. 2 is an elevation of the plug member detached from the bulb.

hard, smooth, and inelastic material.

The bulb b is made of rubber, thus rendering it flexible and slightly elastic, as usual in bulbs of this class. Its front or discharge end is elongated to form a neck 17, adapted to be expanded over suitable projections c of a syringe-tube c. The tube member as a whole is, however, omitted from the drawings, since it forms no part of the present invention. The opposite or rear portion of the bulb has an inclined or beveled end 11 provided with a central hole, whose circumscribing edge b is enlarged and Well rounded, as clearly shown. The bottom of the bulb is also recessed exteriorly and is provided with an annular bead or rim b all as clearly shown.

a indicates a plug memberremovablyseated in the bulbs base. The plug hasa rounded or cone-shaped head a to facilitate its introduction into the said central hole formed in the end of the bulb and a peripheral groove or recess a forming the counterpart of said enlarged edge I) of the base-opening. The plug is further provided with a beveled surface a and cylindrical portion 11 adapted to bear against the corresponding outer surfaces of the bulbs end or base. I prefer to make the plug of glass or porcelain or other The plug may be solid or chambered, as desired. The central part of the end portion of the bulb may be extended inwardly and upwardly from the said edge I), as indicated at 5 thereby further increasing the contact or joint surface of the bulb and plug members. It will be apparent now that the act of compressing the walls of the bulb, as when in use, to force the liquid contents therefrom through the syringe-tube operates to some extent at the same time to depress the yielding end members I) b b of the bulb into a more intimate contact with the adjacent surfaces of the plug, thereby, as before stated, insuring a perfectly water-tight joint, the arrangement, however, in nowise preventing the plug from being readily withdrawn when desired.

In order to wash out, sterilize, and cleanse the interior of my improved bulb b, the plug a is first removed therefrom, thus rendering all parts of the bulbs interior readily accessible. After the cleansing or sterilizing operation has been performed the plug is reintroduced into the central opening formed in the bulbs base, the latter distending or yielding sufficiently to permit the passage of the plugs head a past the edge 17*, at which instant the latter contracts into and snugly fills the groove ad, the surfaces 17 and b at the same time snugly engaging the corre sponding surfaces of the plug, thus completing the operation.

The medicated or treating fluid is readily introduced into the bulb 19 Without detaching the tube 0 therefrom, though, if desired, it is obvious that the bulb may be first separated from the tube for the purpose of chargingit.

I would add that prior to my invention the soft-rubber bulbs of insufflators and syringes have been provided with valved inlet and outlet passages, the same consisting of short metallic tubes or annular plugs having the valves proper seated therein. In such former construction, however, the said tubes or plugs were rigidly cemented or otherwise permanently secured to the bulbs and forming an integral part thereof. Said former construction I disclaim. By means of my invention the plug may be readily removed from the bulb in order to effect a more thorough cleansing of the bulbsinterior, the construction and arrangement being such that when the plug is inserted in the bulb no leakage of air or liquid can result.

I claim as my invention and desire to secure by United States Letters Patent The combination with a syringe-bulb having a suitably-shaped yielding opening inits base or rear end, of a removable inelastic peripherally-grooved plug member adapted to pass through and conform to said opening, and further having the adjacent edge or Wall of the latter contracted into the said groove formed in the plug, substantially as described.

Signed at Providence, Rhode Island, this 29th day of May, 1902.

RICHARD H. EDDY.

Witnesses:

GEO. H. REMINGTON, STEPHEN C. HARRIS. 

